A venomous snake died within five minutes of biting a man in MP's Balaghat on Thursday morning in rarest of rare incidents. The 25-year-old Sachin Nagpure accidentally stepped on the snake, following which the reptile bit him in retaliation. Its venom sac could have ruptured on twisting sharply after biting, leading to its sudden death, Forest Ranger Dharmendra Bisen said.